Malicious PDF — malware analysis report

Static analysis result for SHA-256 5994f98667165cbb…

MALICIOUS

PDF

78.6 KB Created: 2021-04-15 08:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 96a2a20bedd76ba210f1bfcfec1f26e1 SHA-1: e2729433f2e6d8b13db54dd2611a1ede154e4216 SHA-256: 5994f98667165cbbbb652fdcae801208ec283f3de97e6f86f45fe2e0e62cc623
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan distribution attempt. It contains an embedded URI pointing to a URL that masquerades as a download for Adobe Premiere Pro, likely to trick users into downloading malware. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xajibur.ru/strik?utm_term=adobe+premiere+pro+free+full+version+download PDF link annotation
    • http://mikovil.mywebcommunity.org/zobewevoxisap.pdfIn PDF document text
    • http://ninotekega.mygamesonline.org/research_article_on_teacher_education.pdfIn PDF document text
    • https://cdn.sqhk.co/fowipovoji/gj3jfjf/duck_duck_duck_grey_duck.pdfIn PDF document text
    • http://firstreadersclub.com/wugegelajonaxzxys.pdfIn PDF document text
    • http://barberking.best/goririziliwenaxexuxys3qs.pdfIn PDF document text
    • http://govuxojikasumot.scienceontheweb.net/jenixoxatogodibile.pdfIn PDF document text
    • https://cdn.sqhk.co/ferudati/ihwijjj/roxedupivibekosudimoba.pdfIn PDF document text
    • https://cdn.sqhk.co/bemaxopig/2l6x7id/gababido.pdfIn PDF document text
    • https://cdn.sqhk.co/dikonutudibe/fiblggf/guidecraft_contemporary_kitchen_helper_gray.pdfIn PDF document text
    • http://menetufebev.22web.org/tixuvuduzixanafav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jekalabol.epizy.com/89312328741.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/93301557101.pdfIn PDF document text
    • https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_a7bdc75ef29f4a3a80466816f191d42f.pdf?index=trueIn PDF document text
    • http://tabifewegijip.epizy.com/zotiwotanogegorafepu.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/bosch_refrigerator_b21cl80sns_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/fishing_report_barren_river_lake_kentucky.pdfIn PDF document text
    • https://d12d056d-c16f-42d2-bb36-b12dbd13f8e5.filesusr.com/ugd/a2005d_5c6594c9219149989f72b73444cf88f0.pdf?index=trueIn PDF document text
    • https://ac734925-007a-49fa-9a6b-2340142042ec.filesusr.com/ugd/ea78e0_5791359f90bf4c73b1db260a9928e1df.pdf?index=trueIn PDF document text
    • https://8cff94d3-ecab-4ea5-ad27-d3e67d02fd32.filesusr.com/ugd/2813e2_2c6ea18e922b43a48157e9d66f5e4ec8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jigezilor/xizitomawixogosat.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/eagle_american_flag_vector_free.pdfIn PDF document text
    • https://76f5a3e5-08d8-4581-9975-6c1b933a1845.filesusr.com/ugd/dbbd16_a64b579d59404923aafbc6513008ccc1.pdf?index=trueIn PDF document text
    • http://xigufogadenake.epizy.com/sentry_safe_key_not_working.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C8 5468 bytes
SHA-256: a7e1e0336e2bd4eba37d617265ed5fe6dff5bedbd733b77761c81ae67f4433a3
font_01_sfnt_off0001075a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1075A 10816 bytes
SHA-256: d9067307f13cacce472d2d1d97af9430a340b19edfcb4c8d8d0de7d2a5711a82

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